property pstrBackGd : "text-background-color"
property plstRGBEmphasis : {65535, 57054, 42407}

tell application id "com.omnigroup.OmniOutlinerPro3"
	try
		set oStyle to style of first selected row of front document
	on error
		return
	end try
	
	tell attribute pstrBackGd of oStyle
		if value is default value then
			set value to plstRGBEmphasis
		else
			set value to default value
		end if
	end tell
end tell